<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box
        {
            width: 100px;
            height: 100px;
            border: crimson 1px solid;
            /* 上 右 下 左 */
            /* 上下 左右 */
            /* margin: 100px 0 0 200px; */
            margin: 100px 50px;
            /* padding-top: 100px; */
            /* padding-left: 100px; */
            padding: 100px 50px;
            box-sizing: border-box;
        }
    </style>
</head>
<body>
    <div class="box">
        <a href="">test</a>
    </div>
</body>
</html>